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RELEASENOTES.md

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0.25 - 2023-12-17

  • attempt to revive this project with upgraded tooling, for net8.0, net6.0, net48 and netstandard2.0

0.24.0 - 2021.01-10

  • Usability: Operators module now provides I, E and Pi (instead of pi) (breaking)
  • Usability: VariableSets.Alphabet provides a-z variables that can be opened on demand
  • Fixes issue where operators were generic where they should not have been
  • Minor internal simplifications and streamlining

0.23.0 - 2021-01-08

  • Uses Math.NET Numerics v4.15.0 or newer
  • Better support for decimal values
  • Drop From prefix in Expression.FromInt32 et al (breaking)

0.22.0 - 2020-11-01

  • Fix evaluation for Csc ~Andrew Boyarshin
  • Fully separated unary from N-ary functions, they now have a separate DU
  • Distinct known function names: binary atan is now atan2, unary log (log-10) is now lg.
  • Introducinig Enriched and Typed expressions, preparing for explicit argument nodes.
  • LaTeX: render full-word symbols with mathrm and force cdot in products if necessary
  • Infix/LaTeX: visual expressions can now be formatted also to a TextWriter
  • Infix/LaTeX: approximations now always render with a decimal point (to clearly distinct from integers)
  • Infix: parsing logic reworked to parse via visual expressions (no longer forcing auto-simplified full expressions)
  • Approximations now reduce 0.0*x to 0.0 as a practical compromise.
  • Polynomial and rational algorithms handle approximations better (especially 0.0).

0.21.0 - 2020-05-02

  • Support for compact powers of functions in visual expressions. Enabled by default for LaTeX.
  • Simplified visual expression styles, no more customizable function mapping.
  • Visual expressions can now be converted to full algebraic expressions.
  • More convenient interop with primitive number types
  • Uses Math.NET Numerics v4.9.1
  • Build with .NET Core SDK 3.1.1

0.20.0 - 2018-11-18

  • Bind bessel, hankel functions to Math.NET Numerics special functions ~Jong Hyun Kim
  • Bessel ratio functions ~Jong Hyun Kim
  • Airy functions ~Jong Hyun Kim
  • Docs/Website Improvements, Examples for more languages ~FoggyFinder
  • Uses Math.NET Numerics v4.7

0.19.0 - 2018-10-22

  • Bessel and Hankel functions ~Jong Hyun Kim
  • Uses Math.NET Numerics v4.6
  • Supports .Net Standard 2.0

0.18.1 - 2017-12-23

  • Code Signing: SHA2 (256) instead of SHA1

0.18.0 - 2017-11-08

  • Calculus: fix derivatives of Asin, Acos, Atan ~Jong Hyun Kim
  • Trigonometric: fix contraction of cos(a)*sin(b) ~Jong Hyun Kim
  • Trigonometric: expansion and contraction of sinh/cosh ~Jong Hyun Kim
  • Fix and improve arithmetic of infinity, closer to Mathematica ~Jong Hyun Kim
  • Evaluate: powers with negative radix and non-integer exponent are lifted to complex numbers
  • Binaries are now signed with a certificate

0.17.0 - 2017-09-16

  • Compile expressions to delegates ~Francesco Bertolaccini
  • SymbolicExpression: OOP-friendly expression wrapper

0.16.0 - 2017-08-24

  • Multi-Arg functions: atan2, log ~Francesco Bertolaccini, FoggyFinder
  • Trigonometric.substitute: handle cot, sec, csc correctly ~Francesco Bertolaccini
  • Expression.root: apply automatic simplification
  • VisualExpressions: introduce alternative visual (instead of semantic) expression structure
  • Infix, LaTeX, MathML: formatting using visual expressions
  • LaTeX: proper rendering of roots, improved parenthesis handling
  • Infix: avoid parenthesis around floating-point approximations
  • Drop obsolete print functions (use format instead)

0.15.0 - 2017-04-30

  • Infix: support parsing approximations in exponential notation ~FoggyFinder
  • Functions: trigonometric functions sec, csc, cot ~FoggyFinder

0.14.0 - 2017-02-12

  • Infix/LaTeX: enforce culture invariant floating point format
  • Infix/LaTeX: support for underscores in symbol names ~FoggyFinder
  • Structure: collectApproximations

0.13.0 - 2016-12-29

  • Structure: collectSums, collectProducts, collectPowers
  • Structure: collectAll, like collect but continues on accepted nodes
  • Structure: collectPredicate, collectAllPredicate

0.12.0 - 2016-12-27

  • LaTeX: format symbols with a long name with braces

0.11.0 - 2016-11-06

  • Approximation: new concept to represent real (floating point) numbers
  • Approximate: new module to partially evaluate/approximate expressions
  • Expression: explicit NegativeInfinity DU case

0.10.1 - 2016-11-05

  • Evaluate: fix CLI method signature of the evaluate function (cross-language support).

0.10.0 - 2016-11-05

  • LaTeX: always emit braces around power operands
  • LaTeX: formatter must not skip multiplication sign in some cases ~FoggyFinder
  • Infix: parsing sqrt, pow ~FoggyFinder
  • Infix: fix bug on parsing hyperbolic functions ~FoggyFinder
  • Evaluate: better error message when a symbol is missing ~Cer Lewis
  • Polynomial: generate from coefficients list ~Zaid-Ajaj
  • Rational: expand to algebraically expand result if its denominator is a number

0.9.0 - 2016-03-14

  • MathML: basic strict MathML formatting and parsing support
  • Infix/LaTeX: fix missing paranthesis when formatting denominator-free powers
  • LaTeX: fix symbols when formatting arcsin, arccos or arctan
  • Expression: refactoring; operators are now implemented in module instead of class

0.8.0 - 2016-01-09

  • Simplification: more consistent behavior on infinity and complex infinity
  • Expression: new Constant expression leaf nodes (e, pi, I, real/floating-point)
  • Expression: merge Positive/NegativeInfinity with Infinity
  • Expression: Root, Sqrt, Sinh, Cosh, Tanh, ArcSin, ArcCos, ArcTan
  • Functions: Sinh, Cosh, Tanh, ArcSin, ArcCos, ArcTan
  • Operators: real, pi, infinity, complexInfinity, negativeInfinity
  • Operators: log, root, sqrt, sinh, cosh, tanh, arcsin, arccos, arctan
  • Numbers: compare/min/max can also handle the new constants
  • Structure: collect, collectIdentifiers, collectNumbers, collectFunctions etc.
  • Infix: decimal numbers are now parsed as real constant instead of interpreted as rational
  • Infix: unicode symbols for infinity, complex infinity and pi
  • Calculus: learnt to differentiate the new functions

0.7.1 - 2015-10-03

  • Revert FParsec dependency from 1.0.2 back to 1.0.1

0.7.0 - 2015-10-03

  • Updated package dependencies (no functional changes)
  • NuGet package now lists the proper FSharp.Core package

0.6.0 - 2015-09-29

  • Polynomial: square-free factorization
  • Polynomial: commonFactors, coefficientMonomial
  • Rational: reduce to cancel common simple factors (part of expand)
  • Numbers: integer gcd and lcm routines
  • Algebraic: summands, factors, factorsInteger
  • Expression: FromIntegerFraction

0.5.0 - 2015-07-18

  • Infix Parser: interpret decimal notation as exact rational numbers ("0.2" -> "1/5")
  • Infix Parser: allow white space after number literal
  • Calculus: modified argument order for taylor for better currying (breaking!)
  • Calculus: new tangentLine, normalLine
  • Calculus: new differentiateAt as shortcut for differentiate >> substitute

0.4.0 - 2014-11-26

  • Calculus: add taylor expansion function
  • Better Paket compatibility (and NuGet with -ExcludeVersion)
  • Use MathNet.Numerics v3.3.0

0.3.0 - 2014-09-21

  • Use official FSharp.Core 3.1.1 NuGet package, drop alpha suffix
  • Now using Paket internally to maintain NuGet dependencies

0.2.1-alpha - 2014-09-03

  • Package fix to include explicit FSharp.Core reference

0.2.0-alpha - 2014-09-02

  • First actual release
  • Added and improved infix and latex expression printers and infix parsers
  • C# compatibility work: more idiomatic when used in C# or other .Net languages

0.1.0-alpha - 2014-04-07

  • Initial version